CoreWeave · ownership
Who owns CoreWeave?
Magnetar Financial LLC is the largest 13F holder: 13.1% of 13F-reported shares calc.
964 institutions report 398.7M CoreWeave shares in Form 13F, as of quarter end Jun 30, 2026; +77.9M shares vs Mar 31, 2026.
- Magnetar Financial LLC13.1%52.1M shares · −16.5M vs prior quarter (down) · 13F filed Aug 14, 2026
- NVIDIA CORP11.8%47.2M shares · 0 vs prior quarter (unchanged) · 13F filed Aug 14, 2026
- BlackRock, Inc.6.0%24.1M shares · +14.7M vs prior quarter (up) · 13F filed Aug 7, 2026
- GOLDMAN SACHS GROUP INC4.5%18.1M shares · +226K vs prior quarter (up) · 13F filed Aug 14, 2026
- VANGUARD PORTFOLIO MANAGEMENT LLC4.3%17.1M shares · +4.4M vs prior quarter (up) · 13F filed Aug 13, 2026
- VANGUARD CAPITAL MANAGEMENT LLC4.0%15.8M shares · +3.4M vs prior quarter (up) · 13F filed Aug 13, 2026
- JANE STREET GROUP, LLC3.5%13.9M shares · +5.0M vs prior quarter (up) · 13F filed Aug 14, 2026
- Invesco Ltd.3.1%12.4M shares · +11.4M vs prior quarter (up) · 13F filed Aug 14, 2026
- Alyeska Investment Group, L.P.2.7%10.9M shares · +3.9M vs prior quarter (up) · 13F filed Aug 14, 2026
- Value Aligned Research Advisors, LLC2.7%10.9M shares · +2.6M vs prior quarter (up) · 13F filed Aug 17, 2026
- BANK OF AMERICA CORP /DE/2.1%8.3M shares · +2.6M vs prior quarter (up) · 13F filed Aug 14, 2026
- PEAK6 LLC2.0%8.1M shares · +1.2M vs prior quarter (up) · 13F filed Aug 13, 2026
- Aspex Management (HK) Ltd2.0%8.0M shares · +863K vs prior quarter (up) · 13F filed Aug 14, 2026
- Situational Awareness LP1.9%7.5M shares · +302K vs prior quarter (up) · 13F filed Aug 14, 2026
- STATE STREET CORP1.8%7.1M shares · +4.1M vs prior quarter (up) · 13F filed Aug 7, 2026
- Altimeter Capital Management, LP1.5%6.1M shares · +1.6M vs prior quarter (up) · 13F filed Aug 14, 2026
- GEODE CAPITAL MANAGEMENT, LLC1.5%5.9M shares · +2.8M vs prior quarter (up) · 13F filed Aug 12, 2026
- BARCLAYS PLC1.1%4.5M shares · +3.4M vs prior quarter (up) · 13F filed Aug 14, 2026
- UBS Group AG1.1%4.5M shares · +867K vs prior quarter (up) · 13F filed Aug 13, 2026
- NORGES BANK1.1%4.3M shares · +4.3M vs prior quarter (new position) · 13F filed Aug 12, 2026
Share of 13F-reported shares, not of shares outstanding. 13F covers managers with over $100M in US equities; it is not a full shareholder list.
Method and sources
Source: SEC Form 13F data sets (bulk). Each row links to the holder’s own 13F-HR filing. Holder names exactly as filed; one group can file under several names and CIKs (for example two Vanguard entities), and they are listed separately, as filed.
% = the holder’s shares ÷ all shares reported in 13F filings for this company and quarter (calculated by Hollsteen). This is not a share of shares outstanding. Change = shares vs the same filer’s 13F for the prior quarter (Mar 31, 2026).
Erroneous filings and rows are handled by a fixed rule set (restatements replace originals; non-equity rows and implausible rows excluded): 11 erroneous filings excluded or replaced this quarter. No market values are shown.
SEC filings only. No price or market data.
Who holds more than 5%?
4 current Schedule 13D/13G holders
Schedule 13D/13G filings (13) ›
- Magnetar Financial LLC 14.9%
13G/A filed May 6, 2026 · event date Apr 30, 2026 · 2 earlier filings
- NVIDIA CORP 11.5%
13G/A filed Jan 26, 2026 · event date Jan 23, 2026 · 1 earlier filing
- Intrator Michael N 10.1%
13G/A filed Aug 14, 2026 · event date Jun 30, 2026 · 1 earlier filing
- JANE STREET GROUP, LLC 6.2%
13G/A filed Aug 12, 2026 · event date Jun 30, 2026 · 3 earlier filings
- Venturo Brian M 3.6%
below 5% latest filing reports under 5% · 13G/A filed Aug 14, 2026 · event date Jun 30, 2026 · 2 earlier filings
- McBee Brannin 2.9%
below 5% latest filing reports under 5% · 13G/A filed Aug 14, 2026 · event date Jun 30, 2026 · 2 earlier filings
- GOLDMAN SACHS GROUP INC 4.3%
below 5% latest filing reports under 5% · 13G/A filed Aug 12, 2026 · event date Jun 30, 2026 · 1 earlier filing
- CW Opportunity LLC 4.4%
below 5% latest filing reports under 5% · 13G/A filed Jun 23, 2026 · event date Apr 30, 2026 · 1 earlier filing
- VANGUARD GROUP INC 0%
below 5% latest filing reports under 5% · 13G/A filed Mar 26, 2026 · event date Mar 13, 2026 · 1 earlier filing
- FMR LLC 2.1%
below 5% latest filing reports under 5% · 13G/A filed Feb 5, 2026 · event date Dec 31, 2025 · 2 earlier filings
- KOPACC LLC 2.4%
below 5% latest filing reports under 5% · 13G filed Nov 14, 2025 · event date Sep 30, 2025 · 2 earlier filings
- Linden West Trust 1.7%
below 5% latest filing reports under 5% · 13G/A filed Nov 13, 2025 · event date Aug 19, 2025 · 1 earlier filing
- Cogen Jack D 4.5%
below 5% latest filing reports under 5% · 13G/A filed Oct 1, 2025 · event date Sep 30, 2025 · 1 earlier filing
Method and sources
Schedule 13D (active) and 13G (passive) are filed by holders of more than 5% of a class. The percentage is the holder’s own cover-page “percent of class”. A filing older than 18 months (filed before 2025-04-17) is marked stale and is never shown as a current holding. Data as of Oct 14, 2026.
SEC filings only.
Are insiders buying or selling?
0 open-market purchases, 3733 sales in 12 months
Form 4, Oct 14, 2025 – Oct 14, 2026 · 0 shares bought, 58,304,154 shares sold (net −58.3M) · as of Oct 14, 2026
Latest 25 of 5450 Form 4 transactions ›
| Date | Insider (as filed) | Transaction | Shares | Held after |
|---|---|---|---|---|
| Oct 6, 2026 | Boone Karen · Director | Option exercise / RSU conversion | 1,460 acquired | 10,240 |
| Oct 6, 2026 | Agrawal Nitin · Chief Financial Officer | Open-market sale · 10b5-1 | 3 disposed | 132,596 |
| Sep 30, 2026 | Venturo Brian M · Director; Chief Strategy Officer | Option exercise / RSU conversion | 109,380 acquired | 350,751 |
| Sep 30, 2026 | Venturo Brian M · Director; Chief Strategy Officer | Option exercise / RSU conversion | 17,391 acquired | 368,142 |
| Sep 30, 2026 | Venturo Brian M · Director; Chief Strategy Officer | Open-market sale | 65,616 disposed | 302,526 |
| Sep 30, 2026 | McVeety Kristen J · GC and Secretary | Option exercise / RSU conversion | 8 acquired | 123,321 |
| Sep 30, 2026 | McVeety Kristen J · GC and Secretary | Open-market sale | 5 disposed | 123,316 |
| Sep 30, 2026 | McBee Brannin · Chief Development Officer | Option exercise / RSU conversion | 109,380 acquired | 437,071 |
| Sep 30, 2026 | McBee Brannin · Chief Development Officer | Option exercise / RSU conversion | 11,739 acquired | 448,810 |
| Sep 30, 2026 | McBee Brannin · Chief Development Officer | Open-market sale | 56,531 disposed | 392,279 |
| Sep 30, 2026 | Jain Sachin · Chief Operating Officer | Option exercise / RSU conversion | 8 acquired | 157,099 |
| Sep 30, 2026 | Jain Sachin · Chief Operating Officer | Open-market sale | 4 disposed | 157,095 |
| Sep 30, 2026 | Intrator Michael N · Director; CEO and President; 10%-Owner | Option exercise / RSU conversion | 109,380 acquired | 596,509 |
| Sep 30, 2026 | Intrator Michael N · Director; CEO and President; 10%-Owner | Option exercise / RSU conversion | 30,978 acquired | 627,487 |
| Sep 30, 2026 | Intrator Michael N · Director; CEO and President; 10%-Owner | Open-market sale | 78,552 disposed | 548,935 |
| Sep 30, 2026 | Goldberg Chen · EVP, Product & Engineering | Option exercise / RSU conversion | 8 acquired | 50,558 |
| Sep 30, 2026 | Goldberg Chen · EVP, Product & Engineering | Open-market sale | 5 disposed | 50,553 |
| Sep 30, 2026 | Baker Jeff · Principal Accounting Officer | Option exercise / RSU conversion | 8 acquired | 8,345 |
| Sep 30, 2026 | Baker Jeff · Principal Accounting Officer | Open-market sale | 5 disposed | 8,340 |
| Sep 30, 2026 | Agrawal Nitin · Chief Financial Officer | Option exercise / RSU conversion | 8 acquired | 132,604 |
| Sep 30, 2026 | Agrawal Nitin · Chief Financial Officer | Open-market sale | 5 disposed | 132,599 |
| Sep 29, 2026 | Intrator Michael N · Director; CEO and President; 10%-Owner | Open-market sale · 10b5-1 | 89,338 disposed | 597,791 |
| Sep 29, 2026 | Intrator Michael N · Director; CEO and President; 10%-Owner | Open-market sale · 10b5-1 | 74,072 disposed | 523,719 |
| Sep 29, 2026 | Intrator Michael N · Director; CEO and President; 10%-Owner | Open-market sale · 10b5-1 | 12,712 disposed | 511,007 |
| Sep 29, 2026 | Intrator Michael N · Director; CEO and President; 10%-Owner | Open-market sale · 10b5-1 | 10,719 disposed | 500,288 |
Method and sources
Form 4 filings (not 4/A), table I. Open market = transaction codes P (purchase) and S (sale); grants, option exercises, tax withholding and gifts are listed but not counted as buys or sells. Shares and share counts only, as filed; Hollsteen shows no per-share prices. Data is an export, as of Oct 14, 2026, not live.
SEC filings only.